Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quem foi o jóquei no grupo 1 na distância de 1400m em Randwick?
 ###Tabelas: CREATE TABLE pga_tour_professional_career_summary (pga_tour_professional_career_summary_id AUTO_INCREMENT PRIMARY KEY, Year INT, Starts INT, Cuts made VARCHAR, Wins (Majors) VARCHAR, 2nd INT, 3rd INT, Top 10 INT, Top 25 INT, Earnings ($) INT, Money list rank INT, Adjusted scoring average (rank) VARCHAR) CREATE TABLE winners_of_the_kentucky_derby_since_1875 (winners_of_the_kentucky_derby_since_1875_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Winner VARCHAR, Jockey VARCHAR, Trainer VARCHAR, Owner VARCHAR, Time VARCHAR) CREATE TABLE world_records (world_records_id AUTO_INCREMENT PRIMARY KEY, Distance VARCHAR, Event VARCHAR, Time VARCHAR, Meet VARCHAR, Location VARCHAR) CREATE TABLE career_results (career_results_id AUTO_INCREMENT PRIMARY KEY, Result VARCHAR, Date VARCHAR, Race VARCHAR, Venue VARCHAR, Distance VARCHAR, Class VARCHAR, Weight (kg) VARCHAR, Time VARCHAR, Jockey VARCHAR, Odds VARCHAR, Winner/2nd VARCHAR) CREATE TABLE triconsonantal_roots (triconsonantal_roots_id AUTO_INCREMENT PRIMARY KEY, Semitological abbreviation VARCHAR, Hebrew name VARCHAR, Arabic name VARCHAR, Morphological category VARCHAR, Hebrew Form VARCHAR, Arabic form VARCHAR, Approximate translation VARCHAR)  
SELECT Jockey FROM career_results WHERE Class = Group 1 AND Venue = Randwick AND Distance = 1400m